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In February, the Hawkeyes lost longtime offensive coordinator Ken O'Keefe to the Miami Dolphins, where he will serve as the team's new wide receivers coach. Replacing O'Keefe is Greg Davis, who coordinated the offense at the University of Texas from 1998 to 2010.
While O'Keefe was greatly successful in Iowa City, Davis could be an upgrade. He led the high-powered offense of the 2005 team that won the national championship, called the plays for Ricky Williams' Heisman-winning season and helped develop both Vince Young and Colt McCoy into national stars.
But as much success as Davis has achieved, it is never easy for a college team to transition from one offensive scheme to another. It will take time for Davis to impart his style to his offensive players.
Davis is also used to coaching some of the most elite recruits in the country, while Iowa has only compiled one of Scout.com's Top 25 recruiting classes once in the past five years (25th in 2011). Davis will have to adapt to a slightly lower level of talent among his incoming players.
The Hawkeyes will also have a new look on defense, as another longtime coach, defensive coordinator Norm Parker, decided to retire. This change should be a little less dramatic than the offensive change, as Norm was replaced by Phil Parker, a member of the Iowa coaching staff for over a decade.
The defense will not look exactly the same, but Phil Parker worked for a long time under Norm Parker and likely shares many of his ideas about defense. Still, expect some degree of a transition as the defensive players adjust to a new coach.